GRE
$$2^{x}$$+$$2^{x}$$+$$2^{x}$$+$$2^{x}$$
$$4^{x}$$+$$4^{x}$$
The angle opposite to the longest side of the triangle
90°
The least possible total number of patients that Dr. Bradley treated on the 5 working days last week
110
$$xy$$
$$10$$
$$a^{2}$$+$$(\frac{1}{a})^{2}$$
3
100$$y^{2}$$
225($$y^{2}$$ - 1)
$$(\frac{2}{3})^{n}$$$$(\frac{3}{2})^{-n}$$
1
The units digit of $$h$$
2
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